Apparatus for electrical ignition systems.



MESSE Q M. SGHPBR an R. WAGNER. APPARATUS FOB. ELECTRICAL IGNITION SYSTEMS.

Arrmonron FILED Arx. s, 1912.

Piilllielv DSC. 17, 1912.

2 SHEETS-SHEET 1.

SWITCH M. SCHFER I R. WAGNER. APPARATUS FOB. ELECTRICAL IGNITIONSYSTEMS. APPLICATION PILED'APTLS, 1912.

1,047,573. Patent-ganen. 17,1912.

2 SHEETS-SHEET 2.

vs/rrrJ 5555 INS/ENTU PQ fp -y 2%.

UNI-TED STATES rATENToFFicE.

Max SCHFEB AND ROBERT WAGNER, or STUTTGART,- cfrzlstiaaiiir,` ass-raisons To THE FIRM OF ROBERT BOSGH, F STUTTABT, GERIANY.'

l.,AIEIEAB'ATUS FOB ELECTRICAL IGNITION SYSTEMS.

Improvements in Ap a atus for ElectricalV Ignition S stems; an we do hereby declare the following to be a full, clear, and exact description o-the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

vThe present invention relates to apparatus for electrical ignition systems, and more specifically to a compact and effective arrangement of the ignition machine, distributer and mechanical interrupter wherein provision is made for electrically connectin a switch between the ignition'machine and the distributer for the purpose of controlling the ignition currents from the machine, in such cases, for example, as with double ignition systems and a common set of spa-rk plugs, and with single or double ignition systems with two sets of spark plugs.

It is usual to mount the mechanical interrupter at the front end of the rotatable shaft ofan ignition machine, and to drive the distributer from the 'same end of theA shaft. In that case the collector ring connected to the winding of the ignition machine is'preferably located at the other end of the'shaft. vWhere two separate ignition current sources are provided, as in double ignition a ments having both a battery and an ignition machine, or in double spark i 'tionl arran ments wherein two spark p ugs lare provided in eacli' cylinder ofthe mternal combustion e `e, one set of which is to begghort-circuit at certain times, a switch is'1 connected between the collector ring and the distributer for disconnecting the i ition machine from. the distributer in the Exxlst case, and for short-circuiting one set of spark plugs in the'second case. One pole of this switch is electrically connected to the collector brush and the other pole is 'connected to the distributing contact of the distributer by a special conductor leading to the front end of the ignition, machine.

' An object of the invention herein dis- -Speclcation of Letters Patent.

applicati mea api-11 a, iai'a semi No. saam.

i Patented Dec. 17,1912.

closed is to simplify this or providing at the rear end o th'e ignition machine a carrler member provided with a brush holder inA which' the collector brush .shdes,4 ajournal box for the rotatable shaft of the distributer, and two terminal connectors electrically connected respectively to the brush holder and to the distributer shaft which serves to conduct the ignition currents to the distributing contact of the dis- .tributen The switch :for disconnecting the ignition machine from the distributer, or for `short-circuiting one set of spark plugs, is connected between these terminal connectors and may be located at any convenient place. In'this way acompact and yeiective construction isv provided for the purpose. In the accompanying drawings, Figure l is a verticalsection through an ignition ma` chine'embodying the preferred form of our' invention; Fig. 2 is a topv plan view of the machine; Fig. 3 is a top plan view of the carrier -member on a larger scale; Fig. 4 is a vertical longitudinal section on the line A-4 of Fig. 3; Fig. 5is a rear elevation of the carrier member; Fig. 6 is a top plan view of a modified form of the carrierl member adapted for use with doublespark ignition;

and Fig. 7 1s a section'on the line 7-7 of' ii Figs. l and 2, f is the distributei` disk having the binding posts adapted to be connectedto the spark plugs in the cylinders of an .internal combustion engine, and z' is thc distributer shaft. Upon the front end of the distributer shaft 7l is mounted a head c of hardrubber or the like carrying a carbon brush s electrically connected to the distributer shaft which is driven from the-rotatable member of the ignition machine by the gearing w, whereby the brushl s periodanization by ically connects 4the shaft i electrically with v the distributer contacts mounted in the usual manner along the inner periphery of the distributer disk f and connected to bindingv posts t. Upon the rear end ofthe rotata lemember A of thev ignition machine is mounted a. collector ring B electrically connected to the secondary winding Vot the inachine.` The carrier, ,member a, preferably i nal connectors e el, of which e1 is electrically ringl BE l made of insulating material, such as hardrubber, is fastened to the frame of the ignition machine above the collectorlring y The carriergmemberga'is provided with as.

metalsleeve b for holding a carbo brush c, which is .s ring-pressed against the" collector l'ghe metallic journal box. h in the carrier member-serves as the rear bearing for the distributer shaftA z', On the upper side of the blockY 2 are mounted the vtermi.

connected tothe journal box h of the distributerv shaft i by a wirefg embeddedin i carrier member a, while e is connected by an'embedded wired with the brush holder vb. 4The slaiting bores m lead from the rear wall of the carrier member d t'o'intersect the bores of the terminal connectorse e1. Y

' Fig. 2 shows a switch n, mounted in .any convenient place, and electrically connected by wires 3 4 to the terminal connectors ve1 el'xof the carrier member between the collector brush andthe iistributingI contact s. These wires pass through theopemngs Ym and are held in position by theV terminal.

connectors. By opening the switch 'n Ato dise connect the terminal connectors e e1, theignition machine is cut oif 1 from the dis-f` tributar.

Figs. 6 and 7 show a our invention in which the carrier member is adapted for two-spark ignition installations, wherein at -full service speed.` vof the engine, sparks are simultaneously produced at both spark plugs in each cylinder, while at starting or at slow speed only one set of spark plugs is used and the other set short'- A circuited. In installations of this kind, the

collector ring for delivering the ignition currents produced in the secondary winding is usually divided into two segments andv two diametrically opposite brushes are employed for collecting the currents. The two ends of the secondary windingare connected to the two segments, whiseP two spark plugs in each cylinden" inseries with each other through the engine-iframe and the winding of the ignition machine. By means of a switch connectingthe engine frame to one collector brush, one of the sets of spark plugs can be short-circuited in the well known manner. It will be apparent., that such an installation can also Albe provided for double ignition systems.

In Figs. 6 and 7 ,l the hard rubber carrier .member a is provided with the journal box h for the distributer shaft and with two terminal connectors e e1 for the attach-y ment of the wires to a switch. However, instead of the brush sleeve b of the previously described construction,` the bodies of the two' terminal connectors are prolonged downwardly and their lower endsfffform the bottom-of two lateral bores .o fand p. Within l Langere modification '-rtheseu-.fbores roject two pins and r which are pressed y springs (not s own) against the` rolon ations ofthe .terminal connectors egaihi", e155 `he z ins g and r are connected to two'idiametrica l opposite'collector brushes (not shown) an therefore they connect theA 'brushes to ,the binding Vposts e and e1. Tlieliinding' st e1 is connected by a wire g to the journa box h. mIn order to now shortlcircuit one setl'o'f spark-plugs, it is only necessary to close a switch between the terminal connector e and the cylinder frame.

:Having thus described our what we claim is:

1. In combinationwith an ignition. ma-l chine provided vwith. a collector brush :for collecting the lignition currents v prduced therein, andi'a rotatable distributer ,for I disinvention,

tributing theignition currents, of'a carrier; member. vprovided. with an electrical connec `tionto said brush, a journal box for the rotatable shaftof. said distributer, a terminal .connector electrically connected to the brush'A connection,A and another terminal connector electrically connected to said shaft.

2. In combination with ,an ignition machine provided with a collector brush for` collecting the :ignition currents produced therein, .anda rotatable distributer. for dis.-A tributing the` ignition currents, of a can.

rier member rovided with a brush holder for said brus ,z-a joiirnalbox for the ro= connector electrically connected to said brush, and another terminal connectorv electrically connected tosaid shaft. n l

3. In combination with an ignition ma-y chine provided with a collector f brush for collecting the ignition currents produced therein, and a rotatable distributer forvdis# tributing the ignition currents, of an insu'- :tatable shaft of said distributer, a terminal:V

lating carrier member'provided with a mctallic sleeve for holding said brush metallic sleeve in whichthe rotatable shaft `of the distributer is journaled, two terminal connectors, and embedded wires electrically connecting said sleeves to said connectors.

4. In combination with an ignition maanother iio chine provided with a mechanical interrupter mounted at one end thereof and driven therebyand rovided with a disl tributer mounted at t e same end thereof,

and also driventhereby, of an insulating carrier member arranged at the other end of the i 'tion mechanism, said lmember being provided with a` brush holder for the collector b'rush ofthe ignition machine, a jourl lecting. the ignition currents produced. in In testimony whereof wealix our signa.- 10 the ignition machine, and a rotatable distures, 1n presence of two wltnesses. tributer for distributing the ignition currents, of a carrier member provided with a MAX SCHAFER. journal box for the rotatable shaft of said K ROBERT WAGNER. distributer, a terminal connector connected to one of said brushes, and a terminal con- Witnesses:

nector electrically connected to other of said WALTHER STEINCKE,

brushes and also to said shaft. PAUL WOLFABT. 

